Here's a few things to consider as you decide which light to use:

If you're careful, you can start under almost any intensity of light. Ideally, start them under sunlight and suppliment your light period (after the sun goes down) with artificial light. It's a bit of hands-on effort to move them inside at night, but I think they like to go for rides, just like my dog does.

I start mine under full spectrum flouros and move them to MH after they've established themselves -- and after the previous crop is out of the grow room. My reasoning for this is fourfold: economy, environment, kindness, and sequence.

It's more economical to use and replace flouros than MH, even with the cost of purchasing both. If the plant can't use all the light, why use it?

My environment for rooting or cloning is in the bathroom next to the commode. I don't really want a bright, hot light there incubating gosh knows what along with the seeds. I also don't want anyone walking down the hall to notice this bight-azzed light coming from the bathroom. The way people are in my town, they'll think it's an alien invasion. A 24w flouro is a lot easier to explain. . .

I like to be as kind as possible with new starts, either seedlings or cuttings. I use gentle light, watering, fertilizer, etc for this first phase of growth. I can have flouros actually touch a plant without burning it. That's gentle.

Finally, I sequence my plants thru the grow room according to their point in the growth cycle. I take my cuttings for clones (my mainstay of reproduction) while my crop is still in veg. So I don't want them in the same room together when I cut back the light. (Seedlings would be the same). I have to have a separate room for that, and I can't afford to run two big MH lights.

good luck!